133802638 has 8 divisors (see below), whose sum is σ = 209430288. Its totient is φ = 63992544.

The previous prime is 133802633. The next prime is 133802671. The reversal of 133802638 is 836208331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133802633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454331 + ... + 1454422.

It is an arithmetic number, because the mean of its divisors is an integer number (26178786).

Almost surely, 2^133802638 is an apocalyptic number.

133802638 is a deficient number, since it is larger than the sum of its proper divisors (75627650).

133802638 is a wasteful number, since it uses less digits than its factorization.

133802638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908778.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 133802638 is about 11567.3090215486. The cubic root of 133802638 is about 511.4716407170.

The spelling of 133802638 in words is "one hundred thirty-three million, eight hundred two thousand, six hundred thirty-eight".